The ICD-10 code range for Diseases of esophagus, stomach and duodenum K20-K31 is medical classification list by the World Health Organization (WHO).
ICD-10 Code range (K20-K31), Diseases of esophagus, stomach and duodenum contains ICD-10 codes for Esophagitis, Gastro-esophageal reflux disease, Other diseases of esophagus, Disorders of esophagus in diseases classified elsewhere, Gastric ulcer, Duodenal ulcer, Peptic ulcer, site unspecified, Gastrojejunal ulcer, Gastritis and duodenitis, Functional dyspepsia, Other diseases of stomach and duodenum